Quick answers
- Does Sean J. Wollaston accept Medicare assignment?
- Yes. Medicare's clinician data says Sean J. Wollaston accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sean J. Wollaston see?
- In 2024, CMS data shows 559 Original Medicare patients and 308,596 services for Sean J. Wollaston. This counts Original Medicare only and measures volume, not quality.
- What is Sean J. Wollaston's NPI number?
- 1316921075. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sean J. Wollaston, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 559 |
|---|---|
| Services billed to Medicare | 308,596 |
| Different services or procedures | 53 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0717)120,000 services
- Injection, tocilizumab, 1 mg (J3262)111,160 services
- Injection, romosozumab-aqqg, 1 mg (J3111)30,240 services
- Injection, denosumab, 1 mg (J0897)22,020 services
- Injection, methylprednisolone acetate, 1 mg (J1010)9,112 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis75%
- High blood pressure72%
- Osteoporosis55%
- Ischemic heart disease33%
- Anxiety33%
Practice locations
Addresses where Sean J. Wollaston is enrolled with Medicare (CMS data updated October 2, 2026).
- 8640 W 3rd St, Suite 300Los Angeles, CA 90048 (310) 659‑7878
Group practices
Medicare enrollment lists Sean J. Wollaston as a member of this group (CMS data updated October 2, 2026).
- Center for Rheumatology Medical Corporation9 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in Center for Rheumatology Medical Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1316921075 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians